Add 1-2 ml of a 0.1 M lead (II) nitrate solution to a test tube containing 1-2 ml of a 0.1 M potassium iodide solution. Write the balanced equation with states of
matter and ID types of rxn.

D-no effect on the rate

Provide the choices you are given. i would be happy to : ) you!

So the main goal for the elements is stability which is a complete/full valence shell and typically the magic number for a stable element is 8 valence electron but not always. so elements to the left of the periodic table tend to be way less stable then those on the right, so the elements on the left are much more reactive.

It shows that you are ctually  doing what are u asking